Native Build of Qt 5.4.1 on a Raspberry Pi

Hi guys, one small question. On this link: https://wiki.qt.io/Native_Build_of_Qt_5.4.1_on_a_Raspberry_Pi
at the Preparation part is says to :
the Qt binaries should be installed to /usr/local/qt5
How exactly I have to do that so it will work properly. I mean from where and how I have to install the binaries? ( I'm new to Qt and raspberry )

I don't understand, can you tell me how to install the Qt binaries? I know that /usr/local/qt5 is the destination where to install Qt Binaries but what I have to write before this ? What is the full command or commands ?

E: Package 'gstreamer0.10-plugins-bad' has no installation candidate
E: Package 'libmysqlclient-dev' has no installation candidate
and also something abot libfrontconfig1-dev that it can't be localized.